Gas dispersion heating apparatus and apparatus and method for continuous production of carbon nanotube in-situ modified glass fibers

Abstract

The application relates to a gas dispersion heating device and an apparatus and method for continuously preparing carbon nanotube in-situ modified glass fibers. The gas dispersion heating device can directly introduce gas into a heating furnace through a gas diffuser, so that the atmosphere of the heating zone is stable, and the reaction is stable. The apparatus for continuously preparing carbon nanotube in-situ modified glass fibers can integrate two processes with a large difference, i.e. glass fiber surface catalytic layer setting and carbon nanotube in-situ growth, into one set of equipment, realize process and equipment matching, and thus realize continuous preparation of carbon nanotube in-situ modified glass fibers, realize continuous and efficient modification of glass fibers by carbon nanotubes, greatly improve production efficiency, ensure consistency and controllability of carbon nanotube growth, and be beneficial to industrialized preparation of carbon nanotube in-situ modified glass fibers, so that the apparatus is more suitable for practical use.

Description

Technical Field

[0001] This invention relates to a gas dispersion heating device, and more particularly to a gas dispersion heating device and an apparatus and method for the continuous preparation of in-situ modified glass fibers with carbon nanotubes. Background Technology

[0002] Glass fiber is a widely used inorganic non-metallic material with high insulation, high heat resistance, and good mechanical strength. It is often used to manufacture various composite materials, but it also faces problems such as limited functionality and poor interfacial compatibility in composite materials. Carbon nanotubes are a new type of carbon material with unique physical, chemical, and mechanical properties, and are considered excellent functional modifiers for traditional fiber materials.

[0003] In-situ modification of glass fibers with carbon nanotubes can enhance their mechanical properties in electromagnetic absorbing materials, electromagnetic shielding materials, or other composite materials while preserving their original properties. However, current technologies for the preparation of continuous carbon nanotube-modified glass fibers lack reports on continuous in-situ growth of carbon nanotubes and the establishment of continuous catalytic layers. Furthermore, existing equipment for preparing in-situ modified glass fibers with carbon nanotubes suffers from challenges such as difficulty in increasing carbon nanotube content, poor uniformity of carbon nanotubes, and weak bonding between carbon nanotubes and glass fibers. Therefore, the industrial-scale preparation of in-situ modified glass fibers with carbon nanotubes remains a significant challenge. Summary of the Invention

[0004] The main objective of this invention is to provide a gas dispersion heating device and a method for the continuous preparation of carbon nanotube-modified glass fibers. The gas dispersion heating device, through the integrated design of a gas diffuser and a heating furnace, directly introduces gas into the heating furnace via the gas diffuser, thereby stabilizing the atmosphere and reaction in the heating zone (i.e., the actual reaction zone). The continuous preparation of carbon nanotube-modified glass fibers described in this invention, through equipment improvements, integrates two significantly different processes—the setting of a catalytic layer on the glass fiber surface and the in-situ growth of carbon nanotubes—into a single device, achieving process and equipment matching. Therefore, it enables the continuous preparation of carbon nanotube-modified glass fibers, achieving efficient continuous modification of glass fibers by carbon nanotubes, ensuring the consistency and controllability of carbon nanotube growth, and greatly improving production efficiency. The equipment and method described in this invention can be adjusted according to specific glass fiber processing requirements. The high adjustability of the equipment and process is beneficial for improving production efficiency and realizing the industrial-scale preparation of carbon nanotube-modified glass fibers, making it more suitable for practical application.

[0005] The objective of this invention and the technical problem it solves are achieved by the following technical solution. A gas dispersion heating device according to this invention comprises:

[0006] A heating furnace having several circular holes; the circular holes are arranged through two opposite sides of the heating furnace.

[0007] A gas diffuser has an air inlet channel on one side and several air outlet channels on the other side opposite to the air inlet channel; the air outlet channels pass through the circular hole; the gas diffuser is connected to two opposite sides of the heating furnace respectively.

[0008] The objective of this invention and the technical problem it solves are further achieved by the following technical solution. A carbon nanotube in-situ growth device according to this invention comprises:

[0009] A heating furnace having several circular holes; the circular holes are arranged through two opposite sides of the heating furnace.

[0010] A gas diffuser has an air inlet channel on one side and several air outlet channels on the other side opposite to the air inlet channel; the air outlet channels pass through the circular hole; the gas diffuser is connected to two opposite sides of the heating furnace respectively;

[0011] A carbon nanotube growth chamber is embedded in the heating furnace.

[0012] The objective of this invention and the technical problem it solves are further achieved by the following technical solution. An apparatus for the continuous preparation of in-situ modified glass fibers using carbon nanotubes, according to this invention, comprises:

[0013] The container is lined with polytetrafluoroethylene.

[0014] A drying device is located downstream of the container; the drying device is provided with a glass fiber inlet and a glass fiber outlet;

[0015] The gas dispersion heating device described above is located downstream of the drying device; the gas dispersion heating device is provided with a glass fiber inlet and a glass fiber outlet.

[0016] The carbon nanotube in-situ growth apparatus described above is located downstream of the gas dispersion heating apparatus; the carbon nanotube in-situ growth apparatus is provided with a glass fiber inlet and a glass fiber outlet.

[0017] The first spool is located upstream of the container;

[0018] The second spindle is located downstream of the carbon nanotube in-situ growth device.

[0019] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0020] Preferably, the aforementioned device further includes:

[0021] Several rollers, the surface of which is provided with polytetrafluoroethylene;

[0022] The rollers are respectively disposed between the container and the first spool and downstream of the container.

[0023] Preferably, the aforementioned device further includes:

[0024] An atmosphere control system includes an inert gas generator and a flow control device; the flow control device is connected to the inlet channel of the gas dispersion heating device and the inlet channel of the carbon nanotube in-situ growth device, respectively.

[0025] Preferably, the aforementioned device further includes:

[0026] A gas blowing device, which is disposed between the gas dispersion heating device and the carbon nanotube in-situ growth device, is used to replace the gas around the glass fiber with an inert gas.

[0027] Preferably, in the aforementioned apparatus, the drying device comprises:

[0028] An infrared heating furnace is disposed on the inner wall of the drying device; an asbestos layer is disposed between the infrared heating furnace and the inner wall;

[0029] A stainless steel inner lining plate is disposed on another inner wall of the drying device, opposite to the position of the infrared heating furnace.

[0030] Preferably, in the aforementioned device, the carbon nanotube in-situ growth apparatus wherein the carbon nanotube growth cavity is a tubular cuboid cavity.

[0031] Preferably, in the aforementioned device, the tubular cuboid cavity has a length of 1.5–3 m, a width of 0.1–0.25 m, and a height of 0.05–0.1 m.

[0032] The objective of this invention and the technical problem it solves are further achieved by the following technical solution. A method for the continuous preparation of in-situ modified glass fibers using the equipment described above, according to this invention, includes the following steps:

[0033] S1. In the container, glass fibers are impregnated with a precursor solution to obtain wet glass fibers carrying a catalyst precursor.

[0034] S2. In the drying device, the wet glass fiber carrying the catalyst precursor obtained in S1 is dried to obtain dry glass fiber carrying the catalyst precursor.

[0035] S3. In the gas dispersion heating device, the dried glass fiber carrying the catalyst precursor obtained in S2 is thermally reduced to obtain glass fiber with a catalyst layer on its surface.

[0036] S4. In the in-situ carbon nanotube growth apparatus, the glass fiber with a catalyst layer on its surface obtained in S3 is subjected to in-situ carbon nanotube growth to obtain in-situ modified glass fiber with carbon nanotubes.

[0037] By employing the above technical solutions, the apparatus for gas dispersion and heating, and the equipment for continuous preparation of in-situ modified carbon nanotube glass fibers of the present invention, have at least the following advantages:

[0038] 1. The present invention proposes a gas dispersion heating device, which, through the integrated design of a gas diffuser and a heating furnace, directly introduces gas into the heating furnace through the gas diffuser, thereby stabilizing the atmosphere in the heating zone (i.e., the actual reaction zone) and the reaction, thus solving the problem of unstable reaction atmosphere caused by the traditional tubular furnace in the prior art, which has gas inlet at both ends and heating in the center.

[0039] 2. This invention proposes an in-situ carbon nanotube growth device. By embedding the carbon nanotube growth chamber within a heating furnace and connecting the furnace to a gas diffuser, a unified design is achieved. This allows for direct gas introduction into the heating furnace via the gas diffuser, and then into the carbon nanotube growth chamber. This ensures a stable atmosphere and temperature within the growth chamber, facilitating consistent and controllable carbon nanotube growth. The tubular cuboid growth chamber further enhances growth efficiency while facilitating device use and maintenance. Furthermore, the size and shape of the growth chamber can be adjusted according to specific needs, making it more practical for everyday applications.

[0040] 3. The present invention proposes an apparatus for continuous preparation of in-situ modified glass fibers with carbon nanotubes, comprising a gas dispersion heating device, an in-situ carbon nanotube growth device, a container, a drying device, a spool, a roller, and an atmosphere control system. It can integrate two very different processes, namely the setting of a catalytic layer on the glass fiber surface and the in-situ growth of carbon nanotubes, into a single set of equipment, achieving process and equipment matching. Therefore, it can achieve efficient continuous modification of glass fibers with carbon nanotubes, ensure the consistency and controllability of carbon nanotube growth, greatly improve production efficiency, and is more suitable for practical application.

[0041] 4. The method for continuous preparation of in-situ modified carbon nanotube glass fiber proposed in this invention can adjust the equipment and process according to the specific glass fiber processing requirements. The equipment and process have high controllability, which is conducive to improving production efficiency and realizing the industrial-scale preparation of in-situ modified carbon nanotube glass fiber, thus making it more suitable for practical use.

[0042] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0043] Figure 1 This is a partial structural diagram of the gas dispersion heating device of the present invention.

[0044] Figure 2 This is a schematic diagram of the overall structure of the gas dispersion heating device of the present invention.

[0045] Figure 3 This is a schematic diagram of the equipment for the continuous preparation of in-situ modified glass fibers using carbon nanotubes according to the present invention. Detailed Implementation

[0046] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of an apparatus for gas dispersion and heating and a device for continuous preparation of in-situ modified carbon nanotube glass fibers according to the present invention. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0047] The present invention will be further described below with reference to specific embodiments, but this should not be construed as a limitation on the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the above description of the present invention still fall within the scope of protection of the present invention.

[0048] Unless otherwise specified, all materials and reagents mentioned below are commercially available products well known to those skilled in the art; unless otherwise specified, all methods described are methods known in the art. Unless otherwise defined, the technical or scientific terms used should have the ordinary meaning understood by those skilled in the art to which this invention pertains.

[0049] The first aspect of this invention provides a gas dispersion heating device, as shown in the attached figure. Figure 1 As shown, it includes:

[0050] A heating furnace 1 is provided with a plurality of circular holes 2; the circular holes 2 are provided through two opposite sides of the heating furnace.

[0051] The gas diffuser 3 has an air inlet channel 5 on one side and a plurality of air outlet channels 6 on the other side opposite to the air inlet channel 5. The air outlet channels 6 pass through the circular hole 2. The gas diffuser 3 is connected to the two opposite sides of the heating furnace 1 respectively.

[0052] The gas dispersion heating device of this invention, through the integrated design of the gas diffuser 3 and the heating furnace 1, allows the gas outlet channel 6 of the gas diffuser 3 to pass through the circular hole 2 on the tube wall of the heating furnace 1, thereby directly introducing gas into the heating furnace 1 via the gas diffuser 3. This stabilizes the atmosphere in the heating zone (i.e., the actual reaction zone) and ensures a stable reaction, solving the problem of unstable reaction atmosphere caused by the two-end gas inlet and center heating in traditional tubular furnaces. The gas diffuser 3 can also preheat the gas using the residual heat of the heating furnace 1, according to process requirements.

[0053] The gas dispersion heating device of the present invention, as shown in the appendix Figure 1 As shown, the diffusion chamber 4 of the gas diffuser is provided with a sheet-like structure to enhance the turbulence of the gas, so as to achieve gas mixing and diffusion into the interior of the heating furnace 1.

[0054] The gas dispersion heating device of the present invention, as shown in the appendix Figure 1 As shown, the temperature of the heating furnace 1 is automatically controlled by a temperature probe sensor.

[0055] According to the present invention, the gas dispersion heating device, as shown in the attached... Figure 2 As shown, the two ends (cross-sections of both sides) of the heating furnace 1 are completely open, that is, the two ends of the heating furnace 1 are open to the atmosphere. The gas diffuser 3 directly introduces the gas into the heating furnace 1. After the reaction is completed, the unreacted gas is discharged to the atmosphere from the two ends of the heating furnace 1 and can be treated as waste gas.

[0056] According to the present invention, in some embodiments of the gas dispersion heating device, the gas diffuser 3 can directly replace part of the tube wall of the heating furnace 1 and form an integral part with the heating furnace 1, thereby enabling the heating furnace 1 to be connected in series laterally, in parallel laterally, or in parallel longitudinally. The gas diffuser 3 has a gas channel in each channel of the heating furnace 1, thus it can be adapted to different process requirements, and can perform multi-channel processing simultaneously, thereby improving production efficiency.

[0057] A second aspect of the present invention provides an in-situ carbon nanotube growth apparatus, comprising:

[0058] A heating furnace having several circular holes; the circular holes are arranged through two opposite sides of the heating furnace.

[0059] A gas diffuser has an air inlet channel on one side and several air outlet channels on the other side opposite to the air inlet channel; the air outlet channels pass through the circular hole; the gas diffuser is connected to two opposite sides of the heating furnace respectively;

[0060] A carbon nanotube growth chamber is embedded in the heating furnace.

[0061] This invention proposes an in-situ carbon nanotube growth device. By embedding a carbon nanotube growth chamber within a heating furnace, and connecting the heating furnace to a gas diffuser, an integrated design is achieved. This allows for direct introduction of gas through the gas diffuser into the heating furnace, and then into the carbon nanotube growth chamber. This ensures a stable atmosphere and temperature within the growth chamber, facilitating consistent and controllable carbon nanotube growth. The carbon nanotube growth chamber is a tubular cuboid, which improves growth efficiency while facilitating device use and maintenance. Furthermore, the dimensions of the carbon nanotube growth chamber can be adjusted according to specific needs, making it more practical.

[0062] According to the present invention, carbon will accumulate in the carbon nanotube growth cavity during the in-situ growth of carbon nanotubes, so the carbon nanotube growth cavity is easy to disassemble and clean.

[0063] A third aspect of this invention provides an apparatus for the continuous preparation of in-situ modified glass fibers using carbon nanotubes, as shown in the attached diagram. Figure 3 As shown, it includes:

[0064] Container 9 is provided with a polytetrafluoroethylene liner;

[0065] A drying device 10 is located downstream of the container 9; the drying device 10 is provided with a glass fiber inlet and a glass fiber outlet;

[0066] The gas dispersion heating device 11 described above is located downstream of the drying device 10; the gas dispersion heating device 11 is provided with a glass fiber inlet and a glass fiber outlet.

[0067] The carbon nanotube in-situ growth device 13 described above is located downstream of the gas dispersion heating device 11; the carbon nanotube in-situ growth device 13 is provided with a glass fiber inlet and a glass fiber outlet.

[0068] The first spool 7 is located upstream of the container 9;

[0069] The second spindle 14 is located downstream of the carbon nanotube in-situ growth device 13.

[0070] The device described in this invention, comprising the container 9, the drying device 10, and the gas dispersion heating device 11, collectively constitutes a device for setting a continuous glass fiber surface catalytic layer. According to the device described in this invention, two significantly different processes—setting a catalytic layer on the glass fiber surface and in-situ growth of carbon nanotubes—can be integrated into a single device, achieving process and equipment matching. Therefore, it enables efficient continuous modification of glass fibers with carbon nanotubes, ensures the consistency and controllability of carbon nanotube growth, and greatly improves production efficiency, making it more suitable for practical application.

[0071] According to the device of the present invention, the drying device 10 is provided with a glass fiber inlet and a glass fiber outlet to facilitate the entry and exit of glass fibers, and the temperature inside the drying device 10 is automatically controlled by a probe sensor.

[0072] According to the apparatus of the present invention, the first spool 7 is a spool for releasing glass fibers, and the second spool 14 is a spool for collecting glass fibers. The glass fibers can be wound onto the spools in the form of filaments, bundles, or fabrics. Furthermore, the first spool 7 and the second spool 14 are controlled by a synchronous motor to facilitate continuous production.

[0073] The device according to the present invention further includes:

[0074] Several rollers 8, the surface of which is provided with polytetrafluoroethylene;

[0075] The rollers 8 are respectively disposed between the container 9 and the first spool 7 and downstream of the container 9.

[0076] According to the present invention, the surface of the roller 8 contains polytetrafluoroethylene, which can reduce the resistance during glass fiber transport.

[0077] In some embodiments of the present invention, the roller 8 is connected to a pulley. Depending on specific process requirements, such as when a higher glass fiber traction speed is needed, in order to avoid the traction force being concentrated at both ends of the container 9 and causing the glass fiber to break easily, the roller 8 serves as an auxiliary glass fiber conveying device, capable of conveying the glass fiber by rotating in the same direction under the drive of a motor through the pulley connected to it.

[0078] The device according to the present invention further includes:

[0079] The atmosphere control system 15 includes an inert gas generator and a flow control device; the flow control device is connected to the inlet channel of the gas dispersion heating device 11 and the inlet channel of the carbon nanotube in-situ growth device 13, respectively.

[0080] According to the present invention, in the apparatus for continuous preparation of in-situ modified glass fiber of carbon nanotubes, the atmosphere required by the gas dispersion heating device 11 and the carbon nanotube in-situ growth device 13 both come from the atmosphere control system 15, wherein the inert gas generator provides inert gas protection, the flow control device can accurately control the amount of atmosphere required by the gas dispersion heating device 11 and the carbon nanotube in-situ growth device 13, and introduce the gas through the gas diffuser.

[0081] The device according to the present invention further includes:

[0082] A blowing device 12 is disposed between the gas dispersion heating device 11 and the carbon nanotube in-situ growth device 13, and is used to replace the gas around the glass fiber with an inert gas.

[0083] According to the present invention, the inert gas of the blowing device 12 can replace the reducing gas around the glass fiber in the previous stage, thereby preventing the reducing gas from entering the downstream carbon nanotube in-situ growth device 13.

[0084] According to the apparatus of the present invention, the drying device 10 includes:

[0085] An infrared heating furnace is disposed on the inner wall of the drying device 10; an asbestos layer is disposed between the infrared heating furnace and the inner wall.

[0086] A stainless steel inner lining plate is disposed on another inner wall of the drying device 10, opposite to the position of the infrared heating furnace.

[0087] According to the device of the present invention, the stainless steel inner liner is used to reflect infrared rays to ensure that the upper and lower surfaces of the glass fiber are fully irradiated and dried by infrared rays during the drying process.

[0088] According to some embodiments of the present invention, the drying device 10 is externally covered with an asbestos layer that has a heat-insulating effect, so as to further reduce the energy consumption of the drying device 10.

[0089] According to the device of the present invention, in the in-situ carbon nanotube growth apparatus 13, the carbon nanotube growth cavity is a tubular cuboid cavity. Further, the carbon nanotube growth cavity is a tubular cuboid quartz cavity. The tubular cuboid quartz cavity is advantageous for in-situ growth of carbon nanotubes at a temperature of 450 to 800°C and is convenient for subsequent maintenance.

[0090] According to the device of the present invention, the length of the tubular cuboid cavity is 1.5-3m, the width is 0.1-0.25m, and the height is 0.05-0.1m, so that the growth efficiency of carbon nanotubes is higher while facilitating the use and maintenance of the device, which is conducive to ensuring the consistency and controllability of carbon nanotube growth.

[0091] According to the device of the present invention, a fiber tensioner may be further provided between the first spool 7 and the roller 8, the fiber tensioner enabling the glass fiber to be under certain tension and kept in a horizontal state.

[0092] A fourth aspect of this invention provides a method for the continuous preparation of in-situ modified glass fibers from carbon nanotubes using the equipment described above, comprising the following steps:

[0093] S1. In the container, glass fibers are impregnated with a precursor solution to obtain wet glass fibers carrying a catalyst precursor.

[0094] S2. In the drying device, the wet glass fiber carrying the catalyst precursor obtained in S1 is dried to obtain dry glass fiber carrying the catalyst precursor.

[0095] S3. In the gas dispersion heating device, the dried glass fiber carrying the catalyst precursor obtained in S2 is thermally reduced to obtain glass fiber with a catalyst layer on its surface.

[0096] S4. In the in-situ carbon nanotube growth apparatus, the glass fiber with a catalyst layer on its surface obtained in S3 is subjected to in-situ carbon nanotube growth to obtain in-situ modified glass fiber with carbon nanotubes.

[0097] In the method described in this invention, steps S1, S2, and S3 are processes for setting a continuous glass fiber surface catalyst layer.

[0098] According to the method described in this invention, two significantly different processes—the application of a catalytic layer on the surface of glass fiber and the in-situ growth of carbon nanotubes—can be integrated into a single device. This achieves process and equipment matching, and allows for adjustment of the device and process based on specific glass fiber processing requirements. The high controllability of the device and process improves production efficiency, enabling continuous and efficient carbon nanotube modification of glass fibers. Furthermore, it ensures the consistency and controllability of carbon nanotube growth, facilitating the industrial-scale preparation of in-situ modified carbon nanotube glass fibers, thus making it more suitable for practical applications.

[0099] The technical features in the claims and / or specification of this invention can be combined, and the combination is not limited to the combinations obtained through reference in the claims. Technical solutions obtained by combining the technical features in the claims and / or specification are also within the scope of protection of this invention.

[0100] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An apparatus for continuously producing carbon nanotube in-situ modified glass fibers, characterized by, It comprises: a container provided with a polytetrafluoroethylene lining; a drying device provided downstream of the container; the drying device comprises an infrared heating furnace, a stainless steel lining plate, a glass fiber inlet and a glass fiber outlet; the infrared heating furnace is provided on the inner side wall of the drying device; a layer of asbestos is provided between the infrared heating furnace and the inner side wall; the stainless steel lining plate is provided on the other inner side wall of the drying device opposite to the position of the infrared heating furnace; a gas dispersion heating device provided downstream of the drying device; the gas dispersion heating device comprises a heating furnace, a gas diffuser, a glass fiber inlet and a glass fiber outlet; the heating furnace is provided with a plurality of round holes; the round holes are provided through the opposite two sides of the heating furnace; one side of the gas diffuser is provided with an air inlet channel; a plurality of air outlet channels are provided on the other side opposite to the air inlet channel; the air outlet channels pass through the round holes; the gas diffuser is connected with the opposite two sides of the heating furnace respectively; a carbon nanotube in-situ growth device provided downstream of the gas dispersion heating device; the carbon nanotube in-situ growth device comprises a heating furnace, a gas diffuser, a carbon nanotube growth cavity, a glass fiber inlet and a glass fiber outlet; the heating furnace is provided with a plurality of round holes; the round holes are provided through the opposite two sides of the heating furnace; one side of the gas diffuser is provided with an air inlet channel; a plurality of air outlet channels are provided on the other side opposite to the air inlet channel; the air outlet channels pass through the round holes; the gas diffuser is connected with the opposite two sides of the heating furnace respectively; the carbon nanotube growth cavity is embedded in the heating furnace; a first spool provided upstream of the container; a second spool provided downstream of the carbon nanotube in-situ growth device; an atmosphere control system comprising an inert gas generating device and a flow control device; the flow control device is connected with the air inlet channel of the gas dispersion heating device and the air inlet channel of the carbon nanotube in-situ growth device respectively; a blowing device provided between the gas dispersion heating device and the carbon nanotube in-situ growth device for replacing the gas around the glass fiber with inert gas.

2. The apparatus of claim 1, wherein, It further comprises: a plurality of rollers provided with polytetrafluoroethylene on the surface; the rollers are respectively provided between the container and the first spool and downstream of the container.

3. The apparatus of claim 1 or 2, wherein, In the carbon nanotube in-situ growth device, the carbon nanotube growth cavity is a tubular cuboid cavity.

4. The apparatus of claim 3, wherein, The length of the tubular cuboid cavity is 1.5-3m, the width is 0.1-0.25m, and the height is 0.05-0.1m.

5. A method for continuously producing carbon nanotube in-situ modified glass fibers using the apparatus according to any one of claims 1 to 4, characterized in that, It comprises the following steps: S1, impregnating the glass fiber with a precursor solution in the container to obtain wet glass fiber loaded with catalyst precursor; S2, drying the wet glass fiber loaded with catalyst precursor obtained in S1 in the drying device to obtain dry glass fiber loaded with catalyst precursor; S3, heat-reducing the dry glass fiber loaded with catalyst precursor obtained in S2 in the gas dispersion heating device to obtain glass fiber provided with a catalytic layer on the surface; S4, in the carbon nanotube in-situ growth device, carbon nanotube in-situ growth is performed on the glass fiber with the catalytic layer on the surface obtained in S3, and carbon nanotube in-situ modified glass fiber is obtained.

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